Surprise:
* Oh, wow! You got the job? That's amazing!
* Oh, my goodness! Look at that sunset!
Disbelief or Concern:
* Oh, no! I forgot my keys.
* Oh, dear! I think I broke it.
Regret or Sadness:
* Oh, I wish I had said something.
* Oh, it's so sad to see her go.
Agreement or Understanding:
* Oh, I see what you mean.
* Oh, yeah, I know that feeling.
Indignation or Frustration:
* Oh, come on! That's not fair.
* Oh, for goodness sake!
Emphasis or Attention-Grabbing:
* Oh, listen to me!
* Oh, that reminds me...
In Dialogue:
* "Are you coming to the party?"
* "Oh, I don't know. I have to work."
Important Note: The tone and context of the sentence will determine the specific meaning of "oh."
For a more specific example, tell me what emotion or reaction you want to express, and I can help you create a sentence using "oh" as an interjection.